Finding the Third Proportional to 407,940 and 573,454.50

Step by Step Solution

1. Step 1: Write the proportion equation
   407,940 : 573,454.50 = 573,454.50 : x
2. Step 2: Convert to fraction form
   407,940/573,454.50 = 573,454.50/x
3. Step 3: Cross multiply
   407,940x = 573,454.50 × 573,454.50
4. Step 4: Simplify right side
   407,940x = 328,850,063,570.25
5. Step 5: Solve for x
   x = 328,850,063,570.25/407,940
6. Step 6: Final answer
   x = 806,123.61